Non-Linear Four-Wave Interactions

Abstract

A scalable parameterization of non-linear four-wave interactions is being developed to bridge the gap between time consuming exact methods and the fast but in accurate Discrete Interaction Approximation (DIA). Various approaches have been explored to bridge this gap. The first approach is to extend the classic DIA with additional configurations, but this approach is not trivial as no simple procedure exists to define a "next best" set of wave number configurations. It should be remarked that the GDIA developed by Tolman is a major in step in this direction, but its derivation requires large computational resources and each set may depend on physical and numerical wave model settings with which it is derived. The other approach is to start with the full exact solution and strip it down following a mathematical consistent way. This approach is now explored on the basis of the WRT method using various paths.

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Document Details

Document Type
Technical Report
Publication Date
Sep 30, 2012
Accession Number
ADA582094

Entities

People

  • Gerbrant Van Vledder

Organizations

  • Delft University of Technology

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DTIC Thesaurus Topics

  • Abstracts
  • Accuracy
  • Frequency
  • Information Operations
  • Instructions
  • Integrals
  • Lake Michigan
  • Lakes
  • Michigan
  • Ocean Waves
  • Shallow Water
  • Spectra
  • Teamwork
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Readers

  • Calculus or Mathematical Analysis
  • Computational Fluid Dynamics (CFD)